The η′ and the topological charge density

  • B. Borasoy
Hadron physics


We compare two different frameworks which have been proposed to include the η′ in chiral perturbation theory. The equivalence of these two approaches is shown both for the purely mesonic case and in the presence of the ground state baryon octet. The relation between the different sets of parameters in both Lagrangians is clarified.

PACS: 12.39.Fe Chiral Lagrangians 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • B. Borasoy
    • 1
  1. 1.Physik Department, Technische Universität München, 85747 Garching, GermanyDE

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